Home / 27,215.13-40,835.25-12,428.58

Finding the Fourth Proportional to 27,215.13, 40,835.25 and 12,428.58

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Solution

The fourth proportional to 27,215.13, 40,835.25 and 12,428.58 is: 18,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,215.13 : 40,835.25 = 12,428.58 : x
  2. Step 2: Convert to fraction form
    27,215.13/40,835.25 = 12,428.58/x
  3. Step 3: Cross multiply
    27,215.13x = 40,835.25 × 12,428.58
  4. Step 4: Simplify right side
    27,215.13x = 507,524,171.45
  5. Step 5: Solve for x
    x = 507,524,171.45/27,215.13
  6. Step 6: Final answer
    x = 18,648.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.